Befdong apparatus



NOV. 20, 1934. (3l H. EACH y Re. 19,377

v REFINING AIfPARATUs l Original Filed Nov, lO, 1926 minded NtvLzo, 193.4`

UNITED, 1 STA rss miren I OFFICE mamma APPARATUS charles annehmen-J. v originals. 1,821,346, dated september 1, m1, serial No. I147,561, November 1o, 192s. .ae-

ncwed January 28, 1931. Application for reissue August 29, 1933, SerlalNo. 887,378

. Claims.

The present invention relates to apparatus employed in -connection with the refining oi crude i within an enclosing shell and provided with a series oi vapor passes so designed that the tube bundles may be exposed without disconnecting or otherwise disturbing the interior construction.

-The invention also contemplates means for facilitating this exposure of the tubes through the provision oi means for retaining and guiding the free sections oi the sh'ell during the movement of withdrawal. l

Still further features of the invention consist in certain novel features of construction, combinations and arrangements o! parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art i'ron the following description.

" The accompanying drawing illustrating the preferred form o! the invention represents an elevation partially in section of acondensing apparatus embodying the features oi' the invention.

The apparatus shown in the illustrated embodiment of the invention comprises a shell consisting of several cast sections indicated respectively lower shell section through ilanges 29, and is closed at its lower portion by a detachable cover' member 32 rigidly bolted thereto by a ange 33 and an intermediate portion 36. The upper end of each bank of tubes is connected to a floating head, indicated generally at 38. Each floating head comprises a body portion 40 into which the open ends of the tubes are flanged, and a cover member 42 whichsealsone ormoreclosed cham- A56. These nozzles, and the liquid passages com- (el. asv- 223i bers 44 communicating with the interior of the tubes. The lower open ends of the tubes cornmunicate with a series of cooling uid passages or chambers 46 which are formed by ribs 48 deribs vformed on the cover member 32 in a manner to provide a series o1 passages for controlling the iiow of cooling medium through the interior of the tube banks. The hot vapor is conducted to andi'rom'the interior of the enclosing shell through inlet and outlet nozzles 52 and 54, respectively, which are formed upon the lower shell section or vapor nozzle ring 10, as'indicated thel interior ot the tube banks through the passages 46 is controlled through a series ofinlet and outlet nozzles, a portion oi which is indicated at municating therewith, are designed to cause an initial ilow of cooling liquid upwardly through one-half of the tube bank 18; thereafter the chamber 44 in the iloating head redirects the 1 cooling liquid downwardly through the remainadmitted to the last bank of condenser tubes may be water at ordinary tap temperature. The ilrstliquid passage communicating with `the next bank of tubes may be connected with cold charge ing han ofthe tube bank. This coonng liquid 9 lpending fromthe'partition 25, as indicated clearso ly. These ribs cooperate with complementary ,in the drawing. The cponng liquid denvered u) 7 oil, which thereupon ilows in a similar manner 85 'twice through each tube bank-20 and 22, and

lastly iour'times through the double bank of t-ubesindicated at 23. The incoming hot vapor conducted to the interior oi the shell from the nozzle 52 is directed upwardly about the tube .90

bank 23 bvv a baille or partition 60, consisting of a series of sections 62, 64 and 66 connected rey spectively to each of the shell sections. This baille is located between the tube banks 22 and 23,'and at its lower end engages with a partition 68 projecting. upwardly from the transverse partition 25 to'form a closed vapor pass at the lower portion of the-tube bank 23.- The upper end orl the baule is provided with one or more vapor passes or openings '10 formed as indicated in the drawing, in the upper section 62. This baille also projects upwardly between adjacent iloatlng heads for a purpose to be presently described. The vapor, after its forward passage through the first vapor pass is turned downwardly by a baille comprising sections 72, 74 and '16 corresponding with each shell section. The l lower section vof this next baille contacts with a web or partition 78 and is provided with a vapor opening or pass 80 for directing the vapor at' the bottom for the length- Awise traverse to the nextadjacent vapor pass.

This third va `r pass is formed by a sectional partition/,indicated generally at 82, and having an opening 84 at its upperportion.` From the top of the last bank of tubes, the vapor passes' downwardly and outwardly from the nozzle 54.

As also indicated clearly in the drawing, all oi the baiiies, defining the s'everal vapor passes, extend upwardly between adjacent oating hea theconstruction being sov designed that wi drawl of the upper shell sections 12 and'14 is permitted, either in whole or in part, without disturbing the tube bundles and oating heads connected thereto. This is conveniently accomplished by Adisconnecting the 'ilanges between the sections 1,0 and 12, and then elevating the two upper sections, the upper battle sections sliding upwardly therewith between adjacent iloating heads.

Inasmuch as the upper ends ofthe bames are` tube length in the interior of the shell in a manner to permit cleaning of the yexterior of the tubes or the interior-of the shell and the removal oi carbon accumulation therefrom.l It will be noted that the cover member 86 is provided with a depending web 90 which-cooperates with the upper baille section 'l2 to completely close the upper end `of the vapor pass between theiioating'heads 20 and 22, and prevent now of vapor except in a ldownward direction lengthwise oi the tub'e` bundles.

In addition to permitting the withdrawal o! the shell sections and cleaning o! the tubes, the present construction is designed to safeguard the tubes during the withdrawal oi the relatively heavy sections. To this end provision is made for guiding the lower free end of the shell sections until this lower free end has been elevated to a point where opportunity for contact with the tube bundles is prevented. A plurality of guides are rigidly mounted at their lower ends in supports 102 rigidly connectedv to the flange 16 on the lower shell section 10. Each or these guides is loosely engaged by a ring 104 projecting from each of the upper shell sections in a manner to compel movement ci the sections parallel to the tube bundles during withdrawal. It will be evident that these guides are disposedv uniformly about `the exterior of the shell, and that the employment oi the guides, coupled with the baiiles or partitions which slide between the floating heads, not only compels movement o1 the shell sections in a predetermined path but maintains the tube bundles centered with respect thereto. These guides preferably extend upwardly to a point adjacent the floating heads so that complete 'removal of the shell sections is permitted by elevating the bottom of the section 12 above the top of the guides without liability of the sections engaging with the walls of theA tubevbundles.

In the operationpi the apparatus, condensate lformed `in each vapor pa'ss is collected in a basin' formed at the -upper side oi the partition 25 and having a condensate'bleed or outlet 112 communi- Aeating therewith to drain condensate from the collecting basin. It will furthermore be evibasin isV provided with one or more gutters, form,- ing in eiect raised pads surrounding 'the lower ends oi' the tubes and serving to protect the lower ends of the tubes from contact with 'stagnant pools of liquid condensate which otherwise exert a severe corrosive action.

dent from an inspection of the drawing `that each might It will be evident that the above-described'construction results in a maximum of vapor and liquid passages for a given number `of tubes, while 'at the same time permitting bodily withdrawal of the shell and baille sections forming the vapor passes without interference with the tube bundles themselves. i

What isclaimed is:

1. The combination, in apparatus having a plurality of banks of tubes with a surrounding shell, with longitudinal partitions connected to the shell to form a series of passes lengthwise of the tubes and disposed in a manner to permit withdrawal of the surrounding shell and connected partitions from about the tube banks without disconnecting the partitions from the shell, and means forguiding and centering the shell with respect to the tube banks during withdrawal.

2. 'Ihe combination, in apparatus having a lplurality of banks of tubes connected at one end to a unitary tube support and at vtheir opposite ends to individual floating heads, witha series of lsuperimposed shell sections each having partition the exterior of the shell anddesigned to guide and center the shell upon withdrawal from about the tube banks.

4. Heat exchange apparatus comprising a plurality of banks of tubes, a single head to which one end of all the tubes are connected, a iloating head connected to the opposite end of each bank of tubes, a shell surrounding the tubes, a series -of bailies connected with the shell and projecting between the iloating heads to` forma series of vapor passes extending alternately in opposite directions longitudinally of the tube banks, and

`means for insuring a predetermined relative position ci the shell and tube banks upon withdrawal ofthe shell with relation to the tubes.

v5. Heat exchange apparatus comprising a plurality of, vertical tubes, a single head to which the one end of each tube is connected, a plurality of oating heads connected tothe opposite ends shell, with longitudinal partitions adapted taform a series of passes lengthwise of the tubes and exteriorly thereof, and means`for guiding and centering-the shell with respect to the tube banks during withdrawal. y

7. Heat exchange, apparatus comprising a plurality of banks of tubes, a sectional shell sur- 15| rounding the tubes. means for detachably connecting the sections of the shell in assembled relation, means for closing the shell at opposite ends, inlet and outlet nozzles communicating with the interior of the shell about the tubes, means for forming a series ot vapor passes in the interior of the shell, and means' for guiding one or more shell sections during withdrawal from about the tubes.

8". Heat ,exchange` apparatus comprising aplurality of tube bundles connected -at opposite ends to stationary and oating heads, a shell de-` tachably connected to the stationary head and enclosing the tube bundles and floating heads,

a plurality of partitions extending lengthwise 'oi' the tube bundles and all located substantially in 'the planes of division between the iioating heads,

to the opposite ends of the tube bundles, ashell enclosing the space ,about the tube bundles and iioating heads, inlet and outlet vapor nozzles aifording communication with the interior of the shell about the tube bundles, a partition extending lengthwise 'of the tube bundles within the shell for forming a tortuous vapor passage extending lengthwise of the tube bundles, and means for detachably connecting that-portion of the vshell surrounding the tube bundles and iloating heads to the vapor nozzle portion`to permit complete withdrawal of vthe said portion of the shell from about the tube bundles and oating heads without disconnecting the vapor nozzles trom the stationary head.

10. Heat exchange apparatus comprising a tube supporting member, banks of heat'exchange tubing connected to theV member, means associated with the lmember for providing circulation of liquid through the tubing, a vapor nozzle ring surrounding the tubing above the member and detachably connected therewith, a shell closure surrounding the tubing and detachably connected with the nozzle ring, and a vapor-directing partition capable o! removal lengthwise o! the tube banksand providing more than one vapor pass.

CHARLES H. LEACH. 

